Competitors ask EU to probe Google ad technology market practices, FT saysSeveral of Google's (GOOG) rivals, including OpenX and AppNexus, which is part owned by WPP (WPPGY) and Microsoft (MSFT), have suggested that the European Union investigate the internet giant, claiming it may be unlawfully stifling competition in the market for advertising technology, the Financial Times reports. The companies' grievances relate to the way in which Google bundles its advertising technology products through contracts that may discourage or even prevent customers from using competitors' services, the report says. The companies in question have submitted documents to the EU expressing concern over the issue but have not submitted an official complaint, the report adds. Reference Link